Use and Care Manual

6
7
4. Press the centering bit
rmly against your cen-
ter mark, hold the tool
rmly and pull the trig-
ger.
NOTE: If the
48-20-5099 threaded
stud is used, or a cen-
ter pin and guide plate
are not available, use
a template or notched
board to start the hole.
5. Start the tool. After drill-
ing to about the depth
of the core bit teeth,
remove the center pin
and guide plate from
the core bit (not nece-
sary for LHS system).
Resume drilling.
6. To change the core bit, hold the tool upwards,
pointing it away from your body, and run it briey
in forward to loosen the core bit from the adapter.
NOTE: To make deeper holes, remove the core bit,
break and remove the core, then resume drilling.
When drilling long or deep holes, after each inch
of penetration pull the bit partially out of the hole
while the tool is running, to help clear dust from
the bit utes. Dust can clog the bit utes and can
make the bit bind in the hole. If this occurs, stop
the tool, free the bit and begin again.
Drilling Large Diameter Holes
with Core Bits
When drilling holes with large diameter core bits,
dust may build up in the cut and can cause the tool
to stall, bind, or cut slowly. By creating an opening
for the dust to escape, drilling time, bit stress, and
tool stress can be reduced.
1. Start the cut as normal.
2. Once the bit is rmly established in
Cut
approximately
1/4" deep with
a core bit.
Drill a hole
through the
work.
Dust and debris
will fall through
the hole.
Top view
Cut
approximately
1/4" deep with
a core bit.
Drill a hole
through the
work.
Dust and debris
will fall through
the hole.
Top view
Cut
approximately
1/4" deep with
a core bit.
Drill a hole
through the
work.
Dust and debris
will fall through
the hole.
Top view
the hole.
Dust and debris
will fall through
the cut (about 1/4" deep), remove
the bit from the cut.
3. Remove the bit from the tool.
4. Install a standard uted bit, ap-
proximately 7/8" in diameter, onto
the tool.
5. Drill a perpendicular hole through
the kerf of the large hole.
• Depending on the location of the
work, the hole should either break
through the other side of the hole/
oor or extend 4"-5" past the end
of the workpiece (such as into the
dirt below a concrete slab).
• If dust builds up in the hole,vacuum
it out and continue drilling.
• If drilling through a wall, the hole
for dust should be drilled on the
Side vie
w
of slab
lowest part of the large hole
kerf as the dust will fall there
when drilling and can be evac-
uated more easily.
6. Reinstall the core bit and con-
tinue drilling. Dust and debris
will fall through the hole and
optimize the cutting ability of
the bit.
NOTE: If unable to drill a hole
Pull bit out as far
as possible onc
e
or twice per inc
h
drilled.
in the kerf, pull back on the bit
with the hammer running. This
will remove some of the dust
and debris from the cut. Repeat
this for every inch of drilling. If
necessary, vacuum dust and
debris from the cut and sur-
rounding area.
7. For core bits, once the maximum
core bit depth is drilled, the core
must be broken and removed.
• Install a chisel bit.
• Place the chisel into the hole
kerf.
• Chisel down into the kerf at
several points until the core is loose or broken.
• Remove the core and vacuum/remove any remain-
ing dust and debris.
• Install the core bit and continue the cut.
WARNING
To reduce the risk of personal in-
jury and damage to the tool or work:
• Always use the “hammering-only” setting to
set the anchor. Never use the “hammering-
with-rotation” setting to set the anchor.
• Never switch the tool to “hammering-with-
rotation” until after the anchor has been set
and the tooth anchor chuck has been removed
from the anchor.
Setting Self-Drilling Anchors
MILWAUKEE Tooth Anchor Chucks require a “B”
taper adapter.
1. Place the proper size tooth anchor chuck into the
“B” taper adapter. Then insert the “B” taper adapter
into the tool and lock it into place as described.
See “Installing Bits and Chisels”.
2. Insert the anchor into
1/8"
the tooth anchor chuck.
Set the knob for ham-
mering only. Set the
anchor on your mark
and hammer until the
teeth have penetrated
the concrete.
3. Set the knob for ham-
mering with rotation
and drill until the chuck
is 1/8" above the con-
crete.
NOTE: It may be nec-
essary to clean dust
and cuttings from the
anchor several times
while drilling the hole.
Use caution to prevent
exposure to dust.
4. Remove the anchor
from the hole while the
tool is running. Clean
the dust and cuttings
from the anchor by
pointing it downward and turning the tool on and
off several times. Clean the dust out of the hole
with a vacuum cleaner or blowout bulb.
5. Place the expansion plug into the anchor and insert
the anchor into the hole. Switch the knob back to
hammering only, and hammer the anchor rmly
into the hole.
6. Snap the head off of the
anchor. To remove the
head of anchors up to
5/8", grasp the handles
rmly and pull the tool
sharply towards you or
snap off the anchor
head with a hand ham-
mer as shown. The
anchor is now ready to
receive a bolt.
7. To remove the an-
chor head wedged
in the tooth anchor
chuck, use drift pin
48-86-0100.
8. To remove the tooth
anchor chuck, remove the “B” taper adapter from
the nose of the tool. Insert the drift pin supplied
with the adapter into the hole on the side of the
“B” taper adapter and strike it sharply to force out
the tooth anchor chuck.
Chiseling and Chipping
MILWAUKEE Rotary Hammers may be used for
chipping and chiseling.
When chiseling, hold the tool at an angle to the
workpiece. Work from a corner or close to the edge
of the workpiece, breaking off one small area at a
time rather than attempting too large an area.
A variety of accessories are available.
Scaling Chisels
For removing weld spatter or
scale and cutting straight lines.
Bushing Tools
Used to surface concrete.
Mortar Cutting Chisels
(Seam Tools)
For removing old mortar for tuck
pointing or caulking.
Bull Points
For demolition work and starting
holes in concrete slabs.
Flat Chisels
For edging, chipping or
channeling.
Slotting Chisel
For slotting and cutting between
drilled holes in concrete and
masonry.
MAINTENANCE
WARNING
To reduce the risk of injury, always
unplug the charger and remove the
battery pack from the charger or tool before
performing any maintenance. Never disassemble
the tool, battery pack or charger. Contact a
MILWAUKEE service facility for ALL repairs.
Maintaining Tool
Keep your tool, battery pack and charger in good
repair by adopting a regular maintenance program.
Inspect your tool for issues such as undue noise,
misalignment or binding of moving parts, breakage of
parts, or any other condition that may affect the tool
operation. Return the tool, battery pack, and charger
to a MILWAUKEE service facility for repair. After six
months to one year, depending on use, return the
tool, battery pack and charger to a MILWAUKEE
service facility for inspection.
If the tool does not start or operate at full power with
a fully charged battery pack, clean the contacts on
the battery pack. If the tool still does not work prop-
erly, return the tool, charger and battery pack, to a
MILWAUKEE service facility for repairs.
WARNING
To reduce the risk of personal in-
jury and damage, never immerse
your tool, battery pack or charger in liquid or
allow a liquid to ow inside them.
ONE-KEY™
WARNING
Chemical Burn Hazard.
This device contains a
lithium button/coin cell battery. A new
or used battery can cause severe in-
ternal burns and lead to death in as
little as 2 hours if swallowed or enters the body.
Always secure the battery cover. If it does not
close securely, stop using the device, remove the
batteries, and keep it away from children. If you
think batteries may have been swallowed or
entered the body, seek immediate medical atten-
tion.
Internal Battery
An internal battery is used to facilitate full ONE-KEY™
functionality.
To replace the battery:
1. Remove the battery pack.
2. Remove the screw(s) and open the battery door.
3. Remove the old battery, keep it away from children,
and dispose of it properly.
4. Insert the new battery (3V CR2032), with the posi-
tive side facing up.
5. Close the battery door and tighten the screw
securely.
Cleaning
Clean dust and debris from vents. Keep handles
clean, dry and free of oil or grease. Use only mild
soap and a damp cloth to clean, since certain clean-
ing agents and solvents are harmful to plastics and
other insulated parts. Some of these include gasoline,
turpentine, lacquer thinner, paint thinner, chlorinated
cleaning solvents, ammonia and household deter-
gents containing ammonia. Never use ammable or
combustible solvents around tools.
Repairs
For repairs, return the tool, battery pack and charger
to the nearest service center.